//
// (C) Copyright 2009 Irantha Suwandarathna (irantha@gmail.com)
// All rights reserved.
//

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use _in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions _in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer _in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


using System;
using System.Collections.Generic;


namespace EffiProz.Core
{

    /**
     * Transitional container for object names that are unique across the
     * DB instance but are owned by different DB objects. Currently names for
     * Index and Trigger objects.<p>
     *
     * @author fredt@users
     * @version 1.7.2
     * @since 1.7.2
     */
    public class DatabaseObjectNames
    {

        Dictionary<string, QNameManager.QName> nameList = new Dictionary<string, QNameManager.QName>();

        public DatabaseObjectNames() { }

        public bool containsName(string name)
        {
            return nameList.ContainsKey(name);
        }


        public QNameManager.QName getOwner(string name)
        {   
            QNameManager.QName owner;
            if (nameList.TryGetValue(name, out owner))
                return owner;
            else
                return null;
        }

        public void addName(string name, QNameManager.QName owner,
                     int errorcode)
        {

            // should not contain name
            if (containsName(name))
            {
                throw Trace.error(errorcode, name);
            }

            nameList.Add(name, owner);
        }

        public void rename(string name, string newname,
                    int errorcode)
        {

            QNameManager.QName owner = (QNameManager.QName)nameList[name];

            addName(newname, owner, errorcode);
            nameList.Remove(name);
        }

        public QNameManager.QName removeName(string name)
        {


            QNameManager.QName owner = null;
          

            if (!nameList.TryGetValue(name,out owner))
            {
                // should contain name
                throw Trace.error(Trace.GENERAL_ERROR);
            }
            nameList.Remove(name);

            return owner;
        }



        public void removeOwner(QNameManager.QName owner)
        {

            string[] keys = new string[nameList.Count];
            nameList.Keys.CopyTo(keys,0);

            foreach (var key in keys)
            {
                QNameManager.QName val = nameList[key];
                if (val.Equals(owner))
                {
                    nameList.Remove(key);
                }
            }
        }
    }
}
